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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f31dd9443a
The original MPIC MSI bank contains 8 registers, MPIC v4.3 MSI bank contains 16 registers, and this patch adds NR_MSI_REG_MAX and NR_MSI_IRQS_MAX to describe the maximum capability of MSI bank. MPIC v4.3 provides MSIIR1 to index these 16 MSI registers. MSIIR1 uses different bits definition than MSIIR. This patch adds ibs_shift and srs_shift to indicate the bits definition of the MSIIR and MSIIR1, so the same code can handle the MSIIR and MSIIR1 simultaneously. Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> [scottwood@freescale.com: reinstated static on all_avail] Signed-off-by: Scott Wood <scottwood@freescale.com>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: Tony Li <tony.li@freescale.com>
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* Jason Jin <Jason.jin@freescale.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2 of the
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* License.
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*
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*/
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#ifndef _POWERPC_SYSDEV_FSL_MSI_H
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#define _POWERPC_SYSDEV_FSL_MSI_H
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#include <linux/of.h>
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#include <asm/msi_bitmap.h>
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#define NR_MSI_REG_MSIIR 8 /* MSIIR can index 8 MSI registers */
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#define NR_MSI_REG_MSIIR1 16 /* MSIIR1 can index 16 MSI registers */
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#define NR_MSI_REG_MAX NR_MSI_REG_MSIIR1
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#define IRQS_PER_MSI_REG 32
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#define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG)
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#define FSL_PIC_IP_MASK 0x0000000F
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#define FSL_PIC_IP_MPIC 0x00000001
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#define FSL_PIC_IP_IPIC 0x00000002
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#define FSL_PIC_IP_VMPIC 0x00000003
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struct fsl_msi {
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struct irq_domain *irqhost;
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unsigned long cascade_irq;
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u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
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u32 ibs_shift; /* Shift of interrupt bit select */
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u32 srs_shift; /* Shift of the shared interrupt register select */
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void __iomem *msi_regs;
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u32 feature;
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int msi_virqs[NR_MSI_REG_MAX];
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struct msi_bitmap bitmap;
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struct list_head list; /* support multiple MSI banks */
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phandle phandle;
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};
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#endif /* _POWERPC_SYSDEV_FSL_MSI_H */
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